Plug terminal fitting



NOV. 10, 1942. s ss PLUG TERMINAL FITTING .Fiied July 17, 1940 Patented Nov. 10, 1942 UNITED STATES PATENT OFFICEv PLUG TERMINAL FITTING Samuel M. Kass, Philadelphia, Pa. Application July 17, 1940, Serial No. 345,935

1 Claim.

My present invention relates to plug terminals for flexible two-wire electric conductors, herein called insulated electric two-wire cords, widely used for example in energizing household electric appliances such as electric toasters, electric irons, electric pads and the like, from any convenient house outlets, and the invention is more specifically directed to the terminal between the cord and appliance.

Further purposes will appear in the specification and in the claim.

I have elected to illustrate a few forms only of my invention, selecting forms however and minor variations thereof that are practical and efilcient in operation and which well illustrate the principles involved.

Figure 1 is a face elevation illustrating one embodiment of my invention.

Figure 2 is an edge elevation, in half section of Figure 1.

Figure 3 is a view corresponding in general to Figure 1 but showing a somewhat diiferent form.

Figure 4 is an edge elevation, in part in section, of Figure 3.

Figure 5 is a sectional elevation of Figure 6 taken upon the line 5-5 thereof.

Figure 6 is a face elevation of a difl'erent form.

The structure is described in illustration and not in limitation.

The split body members In and I I receive at the rear a cord 16 and are held together by bolts 26 and 21.

The resilient guard 28 is mounted upon outwardly projecting split wedge members located between a ring 29 and the cord and which coop-- erate with the ring in externally connecting and supporting the cord from the ring.

In the illustrations of Figures 1 and 2 my ring along with arms 30 and 3| make up a ring bracket. The arms 38 and 3| are supported by opposite ends of the bolt 25. The arms thus complete a U support or loop having a ring at the middle of the U. The bolt 26 is threaded at 32 into the arm 3| which acts as a nut for the bolt.

The ring externally fits threaded taper members (wedges) 33 and 34 which embrace opposite surfaces of the cord 16. At their lower edges the wedges are shown as out of contact with the cord. The wedges engage split sleeve parts or shoes 35 and 36 which grip opposite faces of the cord at 31 and preferably receive and support a resilient guard fragmentarily shown at 28.

The shoes 35 and 35 may be of any suitable material, as fiber or metal and preferably are preformed at their outer ends to cooperate with the spring guard 28 to receive and support theguard.

The taper members 33 and 34 are shown with inwardly extending teats 38 to indent into or to be received within indentations of the sleeve parts 35 and 36.

As illustrated the members 33 and 34 taper toward the terminal and at their outer ends are provided with wings 39 to facilitate threading into the ring 29.

In Figures 3 and 4 the ring bracket is kept from angular movement about the bolt 26' by shoulders 43 and 4| in arms 30, 3|. In these figures the ring 29' has a tubular extension along the length of the relatively split wedge or taper members 33' and 34'. Shoe 36 is seen in Figure 3.

I may facilitate assembly and somewhat simplify the construction by using a single arm instead of the two arms 30 and 3|, preferably making it somewhat heavier than with the two-arm construction and securing it firmly from any angular movement about the bolt 26 by extending it for additional fastening at the bolt 21.

In Figures 5 and 6 the ring bracket is illustrated as an L shaped strip of fiat or die stamped material adequately heavy or strong to firmly support its ring 29 along Ill by the long arm 3I It is shown both as fitting laterally into the body 10 flush therewith and as tapped to receive the threaded end of the bolt 21, and to receive the bolt 26.

The relatively split taper or wedge members 33 and 3& between the ring 29 and cord 1 6, as illustrated taper away from the terminal and have a smooth longitudinal sliding engagement with the interior of the ring 29 The taper members 33 and 34 throughout their length engage opposite sides of the cord I 6 and at their outer ends are formed at 42 to receive and expand and hold the upper end of the spring guard.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

A terminal for one end of a two-wire electric cord, comprising a longitudinally split body adapted to enclose electric terminal contacts, a bolt holding the split body portions together, a ring adapted to surround the cord, inwardly yieldable taper means for gripping the cord at one point, longitudinally movably mounted in the ring whereby it may be moved in respect to the ring to cause it to grip the cord at one point, shoes at a second point surrounded by the taper means and arms extending from the opposite sides of the ring and secured thereto to engage the bolt on opposite sides of the body to secure the arms to the body.

SAMUEL M. KASS. 

